<!doctype html>
<input placeholder="URL" id="u"><button onclick="fetch('https://api.allorigins.win/raw?url='+encodeURIComponent(u.value)).then(r=>r.text()).then(t=>o.innerText=t).catch(e=>o.innerText='Error')">提取</button>
<pre id="o"></pre>
<style>pre{background:#eee;padding:10px}</style>